Ping works but HTTPS fails over IPsec VPN | MTU vs MSS Explained Using Wireshark

In this video, we analyze a real-world issue where ping works but HTTPS fails over an IPsec VPN. Using Wireshark packet captures, we break down how IPsec overhead reduces the effective MTU, why ICMP “Fragmentation Needed” messages appear, and how an MTU/MSS mismatch can silently break TLS traffic. This is a practical, packet-level explanation focusing on what actually happens on the wire. Packet Bytes — Decode the Network #PacketBytes #IPsecVPN #NetworkTroubleshooting #MTU #MSS #PacketCapture #Wireshark #Firewall #Networking